Entity (2014) on Netflix

Minutes after the technical failure of her spacecraft, an astronaut finds herself ejected from her cockpit and into space. She tries in vain to contact to the base to obtain help. Her oxygen level diminishes slowly but surely. Little by little, fear grabs hold of her. She faints... After floating adrift for several hours through the immensity of space, she awakens to find herself facing a strange and mysterious entity, taking the shape of an immense colored cloud.